package com.huqi.p3;

/**
 * @author 胡琦
 * @date 2022-03-08 星期二 22:39
 */
public class Demo2 {
    public static void main(String[] args) {
        String str = "hello";

        StringBuilder stringBuilder = new StringBuilder(str);

        stringBuilder.append("hehh");


        StringBuffer stringBuffer = new StringBuffer();
        stringBuffer.append(str);


    }

}